Bottom portion of a golf club head for a putter



FIG. 1 is a perspective view of a bottom portion of a golf club head fora putter showing my new design;

FIG. 2 is a second perspective view thereof; and,

FIG. 3 is a bottom view thereof.

The broken line showing of the remainder of the golf club head for aputter and the unshown top and front of the putter form no part of theclaimed design.

The ornamental design for a bottom portion of a golf club head for aputter, as shown and described.